Diamond Bottom. "ULM" NOS. 60's. No hiss, hum, no microphones. The sound is clean and crystal clear! They were also listened to in the Manley Stingray amplifier!
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(2) Date Matched Stewart Warner SW 12AT7 / ECC81 TUBES STRONG! (TESTED W/ TV-7D).
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Quad RCA Raytheon GE 12AT7 ECC81 Audio Tubes. #1 and #4 would be a matched pair. Tested Good @ 90/102, 101/120, 83/71 and 91/105 with a minimum of 55/55.
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Hickok test 5100/5100 umhos gm new test !
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Tungsram made by Mullard ECC81 12AT7. All parcels with value ofGBP20 and over.
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PairNOS BVA ECC81 badged Mazda. BVA made in England. Halo getter. two NOS valves included in this sale. Tube 1 = 9.6/6.0 11.5/6.5. Tube 2 = 12/6.2 12/7.0.
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Manufacturer: Amperex Great Britain. Getter: Top Halo. The tubes need to get to you in one piece. But this the way of the world now. We are always looking to buy more tubes. Large collections, small collections, it doesn't matter.
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New Old stock. With Original box. From clean working environment.
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